Dharma is historic though, and a really appropriate name for a UA focused on religious diversity. Dharma is a key concepts in the 4 major religions that originated in the Indian Subcontinent: Buddhism, Hinduism, Jainism and Sikhism. The religions are sometimes grouped as the Indian or Dharmic religions.Once again, they also gave India a really weird boost that is less straightforward and less useful than other civs... and gave it a name that has little to do with historical Indian diplomacy
While India has had immense influence on SEA, the various Indian states were not part of the Mandala System, so that UA makes no sense with them.(totally could have gone for the Mandala system with city states, given how most of SE Asia used Sanskrit ruler titles, and named their cities/realms after historical and mythical Indian states....)
Spoiler :
Perhaps the Ramayana as a UA to represent that immense cultural power would be appropriate though.
Really disappointed to see Gandhi again. The chosen uniques would have also been perfect for Ashoka too, and he captures India's sometimes violent past a fair bit better, while still maintaining the strong religious theme.